In what stage of wastewater treatment is 90 percent of the oxygen-demanding substances removed from the waste by microbes? primary treatment. secondary treatment. tertiary treatment. septic tank treatment.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?